diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c
index 290c57baa3..e3cda1cd0a 100644
--- a/xen/arch/x86/cpu/mwait-idle.c
+++ b/xen/arch/x86/cpu/mwait-idle.c
@@ -580,6 +580,40 @@ static const struct cpuidle_state atom_cstates[] = {
 	{}
 };
 
+static const struct cpuidle_state tangier_cstates[] = {
+	{
+		.name = "C1-TNG",
+		.flags = MWAIT2flg(0x00),
+		.exit_latency = 1,
+		.target_residency = 4,
+	},
+	{
+		.name = "C4-TNG",
+		.flags = MWAIT2flg(0x30) | CPUIDLE_FLAG_TLB_FLUSHED,
+		.exit_latency = 100,
+		.target_residency = 400,
+	},
+	{
+		.name = "C6-TNG",
+		.flags = MWAIT2flg(0x52) | CPUIDLE_FLAG_TLB_FLUSHED,
+		.exit_latency = 140,
+		.target_residency = 560,
+	},
+	{
+		.name = "C7-TNG",
+		.flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED,
+		.exit_latency = 1200,
+		.target_residency = 4000,
+	},
+	{
+		.name = "C9-TNG",
+		.flags = MWAIT2flg(0x64) | CPUIDLE_FLAG_TLB_FLUSHED,
+		.exit_latency = 10000,
+		.target_residency = 20000,
+	},
+	{}
+};
+
 static const struct cpuidle_state avn_cstates[] = {
 	{
 		.name = "C1-AVN",
@@ -800,6 +834,10 @@ static const struct idle_cpu idle_cpu_atom = {
 	.state_table = atom_cstates,
 };
 
+static const struct idle_cpu idle_cpu_tangier = {
+	.state_table = tangier_cstates,
+};
+
 static const struct idle_cpu idle_cpu_lincroft = {
 	.state_table = atom_cstates,
 	.auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE,
@@ -889,6 +927,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconstrel = {
 	ICPU(0x2d, snb),
 	ICPU(0x36, atom),
 	ICPU(0x37, byt),
+	ICPU(0x4a, tangier),
 	ICPU(0x4c, cht),
 	ICPU(0x3a, ivb),
 	ICPU(0x3e, ivt),